Could you please describe your application: nGZX7Fx5 1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... MB);!qy 2, is the fiber single mode or multimode? what is the NA, core dia,... ~:;3uLs,8 h*0S$p<[1 Generally, fiber coupling efficiency of 40%~90% is reasonable. 'f8(#n=6qP KH KS$D Again let us know your specific bug. t^=U*~ 7>o.0 MANG2004 0X..e$ '